/**
 * @license
 * Copyright 厦门乾元盛世科技有限公司 All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file.
 */
import { ElementRef, Renderer } from '@angular/core';
import { NgForm } from '@angular/forms';
import { AbstractForm } from './abstract.form';
export declare class FormDirective extends AbstractForm {
    private _renderer;
    private _elementRef;
    /** 样式前缀 */
    prefixCls: string;
    /** 表单布局，可选值为`horizontal`, `vertical`, `inline`，默认为`horizontal` */
    layout: 'horizontal' | 'inline' | 'vertical';
    /** 隐藏所有表单项的必选标记 */
    hideRequiredMark: boolean;
    /** 用户CSS样式 */
    class: string;
    constructor(_renderer: Renderer, _elementRef: ElementRef, form: NgForm);
    readonly classes: string;
    getFormClasses(): string;
    isVertical(): boolean;
    isHorizontal(): boolean;
    isInline(): boolean;
}